Who paid for Scalia's flight and weekend retreat where he died? (NOT SCALIA is all we know. Who was on the flight with Scalia? What was their business?)

http://www.dailykos.com/story/2016/02/17/1486570/-Who-paid-for-Antonin-Scalia-s-vacation-to-the-luxury-resort-in-Texas?detail=facebook

Yes, there are several troubling questions now that need to be answered. Although Poindexter admitted to The Washington Post that Scalia was part of an invited group of people and it was standard policy not to charge invited guests, he did confirm that he did not pay for the charter flight that Scalia arrived on in West Texas. So, if he didn’t pay for the charter flight — who did? Supreme Court justices receive a salary of $223,500, hardly enough to pay for charter flights to secluded luxury resorts. 

So who was Scalia traveling with? Who were the other invited guests? Who paid for the charter flight? The public really does deserve to know.